Number of n X 3 0..2 arrays x(i,j) with each element horizontally, diagonally or antidiagonally next to at least one element with value 2-x(i,j).
A230670
Number of n X 3 0..2 arrays x(i,j) with each element horizontally, diagonally or antidiagonally next to at least one element with value 2-x(i,j).
Terms
- a(0) =3a(1) =87a(2) =1173a(3) =17271a(4) =251595a(5) =3669765a(6) =53519163a(7) =780527655a(8) =11383251453a(9) =166013909415
External references
- oeis: A230670